Filtering- machine



Sept. 3, 1929. F, OLSON FILTERING MACHINE 4 Sheets-Sheet l Filed March18, 1927 fr o@ Sept. 3, 1929. F, OLSON 1,726,758

FILTERING MACHINE Filed March 18, 1927 4 Sheets-Sheet 2 1; Enfant);

Wi' ness:

f5 y gf Sept. 3, 1929. F. oLsoN 1,726,758

' FILTERING MACHINE Filed March 18, 1927 4 Sheets-Sheet 5 F. OLSON Sept.3, 1929.

FILTERING MACHINE` Filed March 18. 1927 4 Sheets-Sheet 4 (U nee l anPatented Sept. 3, 1929.

FREDERICK OLSON, OF CHICAGO, ILLINOIS.

FILTERING MACHINE.

Application filed March 18, 1927. Serial No. 176,371.

My invention relates to a machine for filtering gasoline, varnish andother liquids; the invention pertaining to the pressure type of filteremploying filtering elements involving bags of suitable fabric or clothin conjunction with screens of predetermined mesh; and has for itsobject-the provision of a construction whereby an increased filteringarea is provided.

The invention involves a door or vcover for the tank adapted to effect apressure and gas-tight connection, together with means whereby the covermay be released and moved into suitable open position in order thatproper access to the tank interior and the filtering elements thereinmay be had. v

The invention also involves filter bags of novel construction andarrangement with means whereby a complete closure ot the bags may beeffected and all liquid introduced made to pass through the filterelements thereby ensuring a thorough filtering of the liquid.

The invention also involves means for suitably suspending the filterbags in positionv and also permitting the filter bags to be readilyreleased from the -holding means; the bags being of a construction whichwill permit a thorough cleaning thereof.

The objects and advantages of my invention will be more readilycomprehended from the detailed description of the accompanying drawings,wherein-v Figure 1 is a sectional elevation of my improved machine.

Figure 2 is a top plan view thereof.

Figure 3 is a cross sectional viewtaken on the line 3 3 of Figure 2 ofthe upper end or top of the machine.

' Figure 4 is a cross sectional view taken substantially on the line 4 4of Figure 1 llooking in the direction of the arrows.

Figure 5 is a sectional view of the upper end of the machine taken onthe line 5-5 of Figure 2.

Figure 6 is a perspective view of the upper end of my improved filterbagwith a portion broken away and shown in section.

Figure 7 is a perspective view of one part gr bifurcation at the lowerend of the filter Figure 8 is a perspective view of the bag closingmeans or clamp.

Figure 9 is a detail cross sectional view of the top end of the bag withclamp applied.

Figure 10 is a perspective view of abag holding plate.

My improved machine, which is of the vertical pressure type, comprisesan outer tank or shell 15, preferably cylindrical to withstand thepressure employed, and an inner wall or shell 16 in spaced relation withthe outer shell. The inner shell is composed of separate abuttingsections formed to provide a rectangular enclosure to permit easymounting of the filtering elements. The two walls or shells aremaintained in spaced relation and reenforced by suitable `webs or ribs17, see Figure 1, formed integral with the inner shell sections. Thesections of the inner shell 16 are formed at their abutting edges s o asto leave small passages for the fluid to seep through into the outershell and for that reason I show the openings 16a (Figure 1) at thelower ends of the side sectionsv where they rest on the bottom section;while the bottom ribs 17 are likewise provided with openings at 17 a topermit the fluid to flow toward the center of the conca-ved bottom 18 ofthe outer shell 15. The outer shell 15 is provided with a concavedbottom 18 having a suitable outlet conduit 19. The inner shell sections16 on two opposite sides are each provided with a series of grooves 20extending from top to bottom, see Figure 4; the grooves in the oppositewalls being in aligned relation in order to provide slideways forscreens 21 of which a suitable number are employedcommensurate with thesize and capacity of the machine; the screens being maintained incomparatively predetermined close parallel relation with each other; thescreens 21 extendingl from top to bottom of the inner shell 16, Themachine, namely the outer shell. adjacent to the upper end thereof, isprovided with an outlet conduit 22 through which the filtered gasolineor liquid under pressure discharges.

The upper end of the tank is formed with a suitable top portion or wall23 having an opening provided with a closure member or cover 24 adaptedto seat in the opening. The closure member or cover 24 is shown providedwith a hanged periphery as at V25, see Figure 3, having a suitablegasket as at 26 to eii'ect a proper pressure and gas-tight connection.The top 23 is shown provided with suitable standards or brackets 27 inwhich are mounted a shaft 28 to which cover-lifting` arms 29 are securedand which have pivotal connection with the closure member or cover 24.The shaft 2S at one end is provided With a Worm-gear 30 arranged in meshwith a Worm-shaft 3l disposed substantially at right angles to shaft 28and suitably mounted on the top of the machine in a bracket 3'2. rllhefree or outer end of the Worm-shaft 3l is provided with a suitablehand-crank 33, see Figure 2. The shafts'28 and 3l are mounted so as tobe disposed beyond the opening in the top in which the closure member orcover 24 is seated, in order vthat a ro 3er liftin T or raisin@l of theclosure member 24 may take place. lt is apparent, that upon properrotation of the Worm-shaft 3l, through operation of crank 337 shaft 28Will be rotated and the arms 29` 29 oscillated upwardly. thereby liftingthe closure member 24; While on the other hand a lifting or movement ofthe closure member Without rota-tion of the Worm-shaft is impossible.The arms 29 are shown with their outer or free ends provided with links34 which in turn are pivotaly connected at 35 to an upstanding lip orflange 36 formed at the perimeter of the closure member 24.

rlhe closure member or cover 24 is shown provided with laterallydisposed extensions or lugs 37 adapted to strike or engage with the arms29 when the mechanism is operated to raise the cover, thus causing theclosure member or cover 24 to swing into a perpendicular position; asindicated in dotted lines in Figure 3; thereby causing a completeopening of the machine to be obtained. namely with the cover disposedbeyond one side of the opening. rlhis permits full access to the machineinterior for manipulation and positioning of the filteringv elements.

The cover 24 is provided with a manifold 38 shown disposed transverselythereof and having a suitably flexible conduit 39 which connects with apump for forcibly introducing the liquid to be filtered. The manifold isalso' shown provided With a plurality of nipples 40, which preferablyslightly taper toward the bottom and are disposed through openings inthe cover 24; the nipples having` fluid-tight relation With the cover.

My improved filteringelements or bags are indicated at 4l; the upperportion being shown in detail in Figure 6. The upper open end is.provided with an elastic element or coil spring 42 boundcircumferentially into the bag. The top of the bag is provided with theflap portions 43 which are stitched together at the sides of the bag` toprovide a closed neck portion when the Hap extension 43 has beenprovided with the clamp or closure means shown in Figure 8. This clampconsists of the channel member 44 of suitable metal in which a rod 45 ispivoted at one end las shown at 46; While the free end of the rod isthreaded to receive a thumb-nut 4T. The end of the channel incinber 44is cut back toward the top as shown at 4S in order that the thumb-nut 4Tmay be screwed lengthwise of the rod 45 to a. point beyond the lowerprojecting; lips -ll of the channel members; thereby firmly holding therod 45 in place. The neck 43 ol the iilter bagis placed across the rod45, while the clamp is in the open position shown in Fig:- ure 3, namelywith the upper end oi" the neck 43 across the rod 45. as shown in Figure9. The rod, with the overlapping; neck. is then forced upward into thechannel member AAl-land the thumb-nut 47 screwed inward of tbe rod intosnug relation with the end of the channel member.

One of the necks 43 of the bagis provided with a suitable washer 50.such as leather and the like, which is provided with a tapered hole 5lfor insertion over one of the nipples 40 of the manifold 3S. The mainportion of the bag', namely at a short distance below the top. isbifurcatcd as at 52 in order that the bifurcations of the ba may bedisposed on opposite sides of the ven tically disposed screens 2l; thebifurcations being of length to extend substantially to the bottom ofthe inner shell or tank lli. as shown in Figure l.

ln practice, the `gasoline or other liquid to be filtered, is introducedby means ot' a ysuitable pump tlii'ough conduit 39 into manifold 38 andthence b v means ol the respective nipples into all of the filter bags4l: the various bags being filled with the gasoline under pressure; thuscausing;- the sides of the bifurcations of the bags to come into closerelation With the screens 2l.

In order to hold the bags 4l in place. l show each manifold outlet tubeor nipple l'l provided with an elongated plate 53, shown in detail inFigure l0. .lach plate 53 has an opening 54 for passage of a nipple l0therethrough. sulliciently to permit the lower end of the nipple to passinto the opening); 5l, in the Washer 50 of the bar The holes 54 in theplates 53 are preferabljiv made to conform 1with the slight taper el thenipples 40 in order that a snug,` holding; relation may be obtained. Thelower surface of the plates, 53 are extended or laterally flanged beyondthe normal edges of the plate as shown at 55,

As previously stated, the upper ends of the bags 41 are each providedwith a coiled spring or elastic element 42 bound therein. This elasticportion of the bag slipped onto the plate 53; the elastic elementdrawingr the bag into snug relation with the main bod).v portion of theplate 53 and therefore resting,Y on the flanged lower portion orextension 55; thereby holding the bag in suspended position from itsrespective plate 53 i :shown in Figure This construction permits tbebags to be readily removed when desired Sil lll() lif lili) While at thesame time holding the bags in proper unfolded condition.

The bottom of each bifurcation of the bag is shown provided with asuitable pocket as at 56, secured beneath the main bottom of thebifurcation or bag-leg and open at the ends to receive a weight shown inthe nature of a suitable rod 57, see Figure 7. This enables the easyintroduction of the bifurcations between the closely placed screens 21;with the bifurcations straddling the screens as shown in Figure 5.

In practice, the fluid or ,gasoline is introduced, under suitablepressure, through conduit 39 into the manifold 38, after the bags havebeen susp-endedly secured to the respective plates 53; the bifurcationsof the bags being disposed on opposite sides of a screen.

In order to induce proper filtration it is essential to keep thebifurcations apart by an intervening screen which also permits thefiltered gasoline or other fluid to trickle down over the mesh to thebottom of the tank. It is for this reason that a screen is shownparallel with both sides of each bifurcation. As a result of my improvedbags, a greater iiltering area is provided and quicker operation isobtained.

With my construction, easy access to the tank interior is not onlypossible, but removal of the bags and screens for cleaning is alsoreadily accomplished.

p The filtered gasoline flows to the bottom of the outer shell and,being under pressure, is caused to flow out. of conduit 22 to anysuitable container; while any sediment that may pass through the filterbags will settle to the bottom of the outer shell, where it may bewithdrawn through the clean-out drain tube 19.

The outer shell 15 is, of course, provided with suitable supports orstandards as shown at 58 in Figure 1.

Upon operating the crank 33, the lid or closure member with the manifoldmay be lifted through the medium of the arm and link connection betweensaid member -and the shaft 28; thev lugs on the member striking the armsand causing the lid to assume a vertical position to one side of theopening so as to provide an unobstructed opening.

In order to ensure the closure member being in pressure-tiglit relation,I prefer' to employ a swinging bolt 59 pivotally secured to the top 23of outer shell 15; the bolt being adapted to pa-ss between the spacedlugs 37; the free end of the bolt being provided with a butterfly nut asat GO.

I have shown a convenient Way of clamping or holding the bags closed,but it is apparent that any suitable means may be eniployed; and whilethe specific construction shown and described is believed rto be thesimplest and best construction, modifications in certain details may bemade Without, however, departing from the spirit of my invention.

W'hat I claim is:

1. A filtering machine comprising an outer shell provided with an outletat bottom and an outlet adjacent to the top, a sealed closure for thetop of the shell, a manifold carried by said closure and havingdepending nipples in spaced relation, an inner shell arranged in spacedrelation to the outer shell and formed to permit fluid to pass therefrominto the outer shell, a plurality of screens arranged in predeterminedspaced parallel relation, and bifurcated filter bags secured to saidnipples, with the bifurcations disposed on opposite sides of a screen.

2. A filtering machine comprising an outer shell provided with outlets,a closure member for the upper end of the shell, power means foroperating said member and t0 hold the same in closed position againstpressure, a manifold, carried by said closure member provided withdepending outlets in spaced relation, an inner shell arranged in spacedrelation to the outer shell and provided with fluid passages, aplurality of screens, and filter bags suspended intermediate of thescreens.

3. A filtering machine comprising an outer shell provided with outlets,a closure member for said shell, shaft and gear mechanism forcontrolling` said closure member,

means whereby the member is caused tov swing into vertical position whenraised, a manifold located on top of the machine and provided withdepending nipples, an inner shell arranged in spaced relation to theouter shell and having fluid passages, a plurality of screens arrangedin parallel spaced rela-' "ion, and filter bags, suspended from saidnipples, intermediate of said screens.

4. A filtering machine comprising an vouter shell provided with anoutlet at bottom and adjacent the upper end, a closure member at thetopl of the shell, means for controlling said member, a plurality ofinlet tubes carried by said closure member, an inner shell arranged inspaced relation to the outer shell and formed to permit the filteredfluid to pass into the outer shell, vertically disposed slideways in theinner shell, screens mounted in said slideways, bifurcated filter bagsarranged in straddling relation to the screens, and means whereby saidbags are removably clamped to the inne-r ends of said inlet tubes.

5. In a filtering machine, filter bags bifurcated beneath the upperends, resilient means secured in the upper ends of the bags, the upperends of the bags being provided with extended flaps having a tubereceiving aperture.

6. In a filtering machine, a bifurcated filter bag, resilient meansencircling the upper end oic the bag, a toldable tlap portion secured tothe upper end, a tube receiving washer secured in one side ot said flapportion, a weight-holding pocket at the bottom ot each bi'llur ation,and means whereby said flap portion may be clamped in closed condition.

7. ln a filteringl machine, an outer shell provided witn an outletbottom and an outlet in the side adjacent to the top, a closure membertor the top of said shell provided with a fluid receiving` chamberhaving al plurality of depending tubes, an inner shell composed ot'separate sections arranged to permit fluid to pass into the outer shelland provided with outwardly disposed ribs whereby said inner shellsections are maintained in spaced relation to the outer shell, twoopposite sections ot the inner shell having vertically arrangedslideways on the inner faces, and oraminated elements slidably mountedin the slideways and disposed transversely of the inner shell inparallel relation.

8. In a filtering machine, an outer shell provided with an outletadjacent to the top and provided with a drain in the bottom, a. coveradapted to lit into the opening in the top of the shell and flanged toprovide a fluid sealing,` relation therewith, a shaft disp sedtransversely on said shell and provided with Aarms having pivotalconnection with said cover, a crank-shaft having` worm and gearconnection with said rst shatt, means whereby said cover is tilted intovertical position when said shafts are operated to litt s id cover, a'fluid receiving manifold carried by said cover and provided withnipples disposed downwardly through said cover, a shouldered platesecured to the inner end o1 eaeh nipple, and filter bags each formed attop to have binding relation with one of said shouldered plates.

9. ln a filtering machine, an outer cylindrical shell, a cover adaptedto tit into the opening' in the top ot the shell and form fluid-sealingrelation therewth, cranlshat't mechanism for controlling said cover, afluid-receivine manitold carried by said cover and provided with nipplesdisposed downwardly through said cover, the inner ends of the nipplesbeine' each provided with an elongated laterally disposed extension, andlilter bags, each provided at top with an encircling resilient elementwhereby said bags are removably held on said laterall)y disposedextensions of the nipples.

l0. ln a filtering' machine, an outer shell, an inner shell spaeedlymounted in the outer shell to provide a Afluid pa sagre therebetween,two opposite sides ot the inner shell being;1 provided with verticallydisposed alie-ned slideways, screens slidable in said slideways, a covertor said outer shell arranged in duid-tight rela Vion therewith, aplurality ot inlet nipples disposed through raid cover, with their innerends` each provided with an elongated late al extension, iilter baji'shavinf; tops proi-rided with nipple receiving fand means whereby thetops ot the bags are held onto said extensions.

ll. ln a filteringy machine. an outer shell, an inner shell spacedlvmounted in the outer Shel, to provide a fluid passage therebetween,screens arranged in spaced relation within the inner shell, a. closure`for the top oi the outer shell, fluid introducing` tubes disposedthrough the top ot the outer shell, bilureated iilter bags withtube-receivineopenings in thc top. each hair straddlinir a screen withweon, and means whereby the tops oli s are held suspended from thetubes. a .filtering machine, an outer shell, shell spacedly mounted inthe outer provide a fluid passage therebetween, arranged slii'leways on'opposite t the inner shell, screens .slidablo in said slideways, a coveriter said outer shell provided with Huid introduein;y tubes extending;theretln'ouejh, a rocker-simil' proviled with a pair of arms pivotallyconnectetL with said cover, an operatingshalt having` worin and rearconnection witl. said rocker-shalt, and filter-bags slu=pended tronisaid tubes and disposed intermediate ot said screens.

l2 ln a lilteringl machine. a tank provided top with e. plurality otfluid intriulucinnl :nen 1vers. a plurality ot' .'ertically disposed sarranged in spaced relation and extending; trzcnsverfieljr ot the tanti.filter bans suspendedly mounted between the screens and having; ,fzislteted inlet openings :it the upper ends, and mains disposedti'anr-iversely of the bags tor closing the. open portion et the bagsagainst the pressure ol the iluid introduced into the bangs.

FREDlCllltfl Oliltlil.

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